I have 8 boxes of G5 sensors (32 sensors), which I will not be using anymore since I moved to the G6.
They are essentially all expired:
3 boxes expiring Jul/2/2019
1 box (+1 loose sensor) expired May/29/2019
2 boxes expired Mar/19/2019
2 boxes expired Nov/03/2018
They were always kept in a dry and cool place. Can send any of those to anyone who pays for shipping. PM me here if interested.